[issue13349] Non-informative error message in index() and remove() functions

[Emmanuel Arias]

Emmanuel Arias added the comment:

I agree with Jim Fasarakis-Hilliard this message may be change in new 3.7 version

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nosy: +eamanu

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13349>
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